Electrocardiogram/Respiration (ECG/Resp) Measurement
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Introduction to the Instrument
• ECG Alarming
This software receives the averaged heart rate from the cardiotach software and derives
alarms by comparing this rate against the limits and the asystole condition. Heart rate
alarms are communicated to the display unit via the operating system.
• ECG Controls
This software handles:
• selection of ECG leads
• setting of heart rate alarm limits
• selection of ECG display filter characteristics
• Respiration Artifact Suppression
This software receives the respiration and ECG waves from the ECG/Resp CPU. A
software filter removes any potential ECG overlay from the respiration wave. The filtered
respiration waveform is communicated to the display unit via the operating system.
• Breath Detector
This software detects the respiration rate using a trigger threshold that is dynamically
adjusted according to the amplitude of the wave. The time between breaths is measured and
the respiration rate is calculated. This is communicated directly to the Resp alarming, and
via the operating system to the display unit.
• Resp Alarming
This software receives the respiration rate from the breath detector and derives alarms by
comparing this rate against the limits and the apnea condition. Respiration rate alarms are
communicated to the display unit via the operating system.
• Respiration Controls
This software handles:
• setting of respiration rate alarm limits
• scaling of the display wave for the best fit for the display channel.
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